My Samsung s6 active won't show and connect with my Gemini Mix2go controller. Neither will my friends samsung galaxy 5 the only device that works is an iPhone Ive tried every possible solution i could think of so How to do I fix this issue so I didn't just waste $300+

Rubbish!! How can a manafacturer sell a product saying that it depends on your software and then you deny that you even support that product? It`s all through their youtube videos, so sort your stuff out and help us people who need your software to use our devices!!

No worries, All good! I am now using my android crossDj Pro with the Gemini Mix2go and that`s with android lollipop OS! Make sure you have the OTG cable plugged in and a cable from your headphones output to the aux input and launch the app after all the connections are made and the MIDI is turned on